#THIS ADDON SETS ALL CORRECT MANUAL FRAME RANGES TO ALL ACTIONS AT ONCE PRESSING JUST ONE BUTTON
#MORE INFO: https://www.keviniglesias.com/animationBlenderFiles.html

bl_info = {
    "name": "Kevin Iglesias Manual Frame Range Setter",
    "author": "Kevin Iglesias (www.keviniglesias.com)",
    "version": (1, 1),
    "blender": (4, 1, 0),
    "location": "3D View > Sidebar > Kevin Iglesias",
    "description": "Automatically set Manual Frame Range from custom property to all actions",
    "category": "Animation",
}

import bpy

def set_frame_range(action):
    end = action.get("animation_end_frame")
    loop = action.get("animation_loop")
    if end is None:
        return False
    if loop is None:
        return False
    action.use_frame_range = True
    action.frame_start = 1
    action.frame_end = end
    action.use_cyclic = loop > 0
    return True

class ACTION_OT_apply_current(bpy.types.Operator):
    bl_idname = "actiontools.apply_current"
    bl_label = "Apply to Current Action"
    bl_description = "Enable Manual Frame Range for current action"

    @classmethod
    def poll(cls, context):
        obj = context.object
        return obj and obj.animation_data and obj.animation_data.action

    def execute(self, context):
        action = context.object.animation_data.action
        if not set_frame_range(action):
            self.report({'WARNING'}, f"'{action.name}' missing 'animation_end_frame'")
        else:
            self.report({'INFO'}, f"Applied to '{action.name}'")
        return {'FINISHED'}

class ACTION_OT_apply_all(bpy.types.Operator):
    bl_idname = "actiontools.apply_all"
    bl_label = "Apply to All Actions"
    bl_description = "Enable Manual Frame Range for all actions"

    def execute(self, context):
        failed = []
        for action in bpy.data.actions:
            if not set_frame_range(action):
                failed.append(action.name)
        if failed:
            self.report({'WARNING'}, "Missing 'animation_end_frame' in: " + ", ".join(failed))
        else:
            self.report({'INFO'}, "Applied to all actions")
        return {'FINISHED'}

class VIEW3D_PT_action_tools(bpy.types.Panel):
    bl_label = "Manual Frame Range Setter"
    bl_space_type = 'VIEW_3D'
    bl_region_type = 'UI'
    bl_category = "Kevin Iglesias"

    def draw(self, context):
        layout = self.layout
        layout.label(text="Apply Manual Frame Range:")
        layout.operator("actiontools.apply_current", icon="ACTION")
        layout.operator("actiontools.apply_all", icon="FILE_REFRESH")

classes = (
    ACTION_OT_apply_current,
    ACTION_OT_apply_all,
    VIEW3D_PT_action_tools,
)

def register():
    for cls in classes:
        bpy.utils.register_class(cls)

def unregister():
    for cls in reversed(classes):
        bpy.utils.unregister_class(cls)

if __name__ == "__main__":
    register()